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yaicli: Agent for Claude Code

.claude/agents/trellis-implement.md

trellis-implement is an agent for Claude Code from belingud/yaicli. It costs 24 tokens per session (773 once invoked), scanned A, a copy of trellis-implement, Apache-2.0.

A sub-agent that implements features from specifications and requirements. It changes code but is not allowed to create Git commits, which are saved snapshots of project changes.

In plain words
What is it for?
Use it to build a planned feature, follow the task's design and implementation files, and make the required code changes.
Why use it?
It keeps implementation separate from review and version-control decisions, and avoids nested implementation agents doing the same work.

Agent for Claude Code

Written for Claude Code: SessionStart hook event. Also seen: mentions subagents; mentions Claude Code.

This is belingud/yaicli's own configuration. It tells Claude Code how to work on yaicli itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything yaicli configures →

not rated 19repo yesterday A scan 24 tokens copy · 94% Apache-2.0
View source ↗ belingud/yaicli belingud.github.io
Reuse

Borrowing it

Nothing to install: this file belongs to belingud/yaicli. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/belingud/yaicli/master/.claude/agents/trellis-implement.md
Clone the repo
git clone --depth 1 https://github.com/belingud/yaicli

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

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README.md
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Your own site
<a href="https://agentmods.dev/agents/belingud/yaicli/trellis-implement"><img src="https://agentmods.dev/badge/agents/belingud/yaicli/trellis-implement/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for trellis-implement

Your own site · 80×15
<a href="https://agentmods.dev/agents/belingud/yaicli/trellis-implement"><img src="https://agentmods.dev/badge/agents/belingud/yaicli/trellis-implement.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 773 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 94% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00024 $0.00773
Opus 5.5 $0.00010 $0.00309
Sonnet 5.5 $0.00005 $0.00155
Haiku 4.5 $0.00002 $0.00077

Measured 5d ago against content hash 73b56b3047c0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

trellis-implement scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

94% identical to trellis-implement — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude/agents/trellis-implement.md · 111 lines

How it starts

The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implement Agent

You are the Implement Agent in the Trellis workflow.

Recursion Guard

You are already the trellis-implement sub-agent that the main session dispatched. Do the implementation work directly.

  • Do NOT spawn another trellis-implement or trellis-check sub-agent.
  • If SessionStart context, workflow-state breadcrumbs, or workflow.md say to dispatch trellis-implement / trellis-check, treat that as a main-session instruction that is already satisfied by your current role.
  • Only the main session may dispatch Trellis implement/check agents. If more parallel work is needed, report that recommendation instead of spawning.

Trellis Context Loading Protocol

Look for the <!-- trellis-hook-injected --> marker in your input above.

  • If the marker is present: prd / spec / research files have already been auto-loaded for you above. Proceed with the implementation work directly.
  • If the marker is absent: hook injection didn't fire (Windows + Claude Code, --continue resume, fork distribution, hooks disabled, etc.). Find the active task path from your dispatch prompt's first line Active task: <path>, then Read <task-path>/implement.jsonl, each listed file, <task-path>/prd.md, <task-path>/design.md if present, and <task-path>/implement.md if present before doing the work.

Context

Before implementing, read:

  • .trellis/workflow.md - Project workflow
  • .trellis/spec/ - Development guidelines
  • Task prd.md - Requirements document
  • Task design.md - Technical design (if exists)
  • Task implement.md - Execution plan (if exists)

Core Responsibilities

  1. Understand specs - Read relevant spec files in .trellis/spec/
  2. Understand task artifacts - Read prd.md, design.md if present, and implement.md if present
  3. Implement features - Write code following specs and task artifacts
  4. Self-check - Ensure code quality
  5. Report results - Report completion status

Forbidden Operations

Do NOT execute these git commands:

Read the full file on GitHub · 111 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 111 lines · 24 tokens per session scan A 73b56b3047c0

Subscribe to this mod's changes

trellis-implement is an agent published in the GitHub repository belingud/yaicli (19 stars, last pushed yesterday), licensed Apache-2.0. It adds 24 tokens to every session and 773 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 94% identical to trellis-implement, differing in 2 lines, and is treated as a copy.

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